/* ==========================================================================
   博喜体育 · 共享样式表 /assets/site.css
   看台数据台：深墨绿与炭黑暗部，苗银冷光文本，蜡染靛蓝分区，暖橙重点
   ========================================================================== */

/* ---------- 1. Reset ---------- */
*,
*::before,
*::after{box-sizing:border-box}

html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
}

body,h1,h2,h3,h4,h5,h6,p,ul,ol,dl,dd,figure,blockquote,fieldset{margin:0;padding:0}
ul,ol{list-style:none}
img,svg,video{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
a{color:inherit;text-decoration:none}
table{border-collapse:collapse;width:100%}

/* ---------- 2. 变量 ---------- */
:root{
  /* 矿物色体系 */
  --c-ink:#0B241D;
  --c-coal:#111413;
  --c-silver:#D8E4E1;
  --c-indigo:#23405F;
  --c-orange:#F08A3C;
  --c-red:#D93A3A;
  --c-amber:#E8B23A;
  --c-stone:#6F7A76;
  --c-cream:#F4F0E6;
  --c-moss:#4F6B58;

  /* 细边界 */
  --line:rgba(216,228,225,.15);
  --line-strong:rgba(216,228,225,.34);

  /* 字体 */
  --font-head:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-body:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:"IBM Plex Mono","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  /* 字号 */
  --fs-h1:clamp(2.5rem,6.4vw,5.5rem);
  --fs-h2:clamp(1.65rem,3.2vw,2.5rem);
  --fs-h3:clamp(1.15rem,1.7vw,1.5rem);
  --fs-body:1rem;
  --fs-note:.8125rem;

  /* 结构 */
  --bar-h:42px;
  --frame-max:1400px;
  --pad-x:24px;
  --radius:0px;

  /* 动效 */
  --t-fast:120ms ease-out;
  --t-mid:180ms ease-out;
}

/* ---------- 3. 基础排版 ---------- */
body{
  min-height:100vh;
  display:flex;
  flex-direction:column;
  padding-top:var(--bar-h);
  background:var(--c-ink);
  color:var(--c-silver);
  font-family:var(--font-body);
  font-size:var(--fs-body);
  font-weight:400;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

#main-content{flex:1 0 auto;display:block}
main [id]{scroll-margin-top:calc(var(--bar-h) + 92px)}

h1,.h1{
  font-family:var(--font-head);
  font-size:var(--fs-h1);
  font-weight:900;
  line-height:1.04;
  letter-spacing:-.02em;
  color:var(--c-cream);
}

h2,.h2{
  font-family:var(--font-head);
  font-size:var(--fs-h2);
  font-weight:800;
  line-height:1.12;
  letter-spacing:-.02em;
  color:var(--c-cream);
}

h3,.h3{
  font-family:var(--font-head);
  font-size:var(--fs-h3);
  font-weight:700;
  line-height:1.3;
  letter-spacing:-.01em;
  color:var(--c-silver);
}

p{line-height:1.7}

strong{font-weight:700;color:var(--c-cream)}

.num,
time,
.mono{font-family:var(--font-mono);font-weight:600;letter-spacing:0;font-variant-numeric:tabular-nums}

.note{
  font-family:var(--font-mono);
  font-size:var(--fs-note);
  letter-spacing:.08em;
  color:var(--c-stone);
}

::selection{background:var(--c-orange);color:var(--c-coal)}

/* ---------- 4. 无障碍 ---------- */
:focus-visible{
  outline:2px solid var(--c-amber);
  outline-offset:3px;
}

.skip-link{
  position:absolute;
  left:16px;
  top:-120px;
  z-index:210;
  padding:10px 18px;
  background:var(--c-amber);
  color:var(--c-coal);
  font-weight:700;
  font-size:13px;
  letter-spacing:.02em;
  transition:top var(--t-fast);
}
.skip-link:focus{top:calc(var(--bar-h) + 8px)}

.sr-only{
  position:absolute;
  width:1px;height:1px;
  padding:0;margin:-1px;
  overflow:hidden;
  clip:rect(0 0 0 0);
  white-space:nowrap;
  border:0;
}

/* ---------- 5. 容器与网格 ---------- */
.wrap{
  width:100%;
  max-width:var(--frame-max);
  margin:0 auto;
  padding-left:var(--pad-x);
  padding-right:var(--pad-x);
}
.wrap--narrow{max-width:820px}

.grid-2{
  display:grid;
  gap:clamp(16px,2.4vw,28px);
  grid-template-columns:repeat(auto-fit,minmax(260px,1fr));
}
.grid-3{
  display:grid;
  gap:clamp(16px,2.4vw,28px);
  grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
}
.grid--stand{
  display:grid;
  gap:clamp(20px,3vw,44px);
  grid-template-columns:minmax(0,4fr) minmax(0,8fr);
  align-items:start;
}

/* ---------- 6. 通用按钮与标签 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:13px 22px;
  border:1px solid var(--line-strong);
  background:transparent;
  color:var(--c-silver);
  font-family:var(--font-body);
  font-size:14px;
  font-weight:700;
  letter-spacing:.02em;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 10px),calc(100% - 10px) 100%,0 100%);
  transition:background-color var(--t-fast),color var(--t-fast),border-color var(--t-fast);
}
.btn:hover{background:var(--c-indigo);border-color:var(--c-indigo);color:var(--c-cream)}

.btn--primary{
  background:var(--c-orange);
  border-color:var(--c-orange);
  color:#1A1206;
}
.btn--primary:hover{background:#FFA45C;border-color:#FFA45C;color:#1A1206}

.btn--ghost{
  border-color:rgba(240,138,60,.5);
  color:var(--c-orange);
}
.btn--ghost:hover{background:rgba(240,138,60,.14);border-color:var(--c-orange);color:var(--c-orange)}

.section-label{
  display:flex;
  align-items:center;
  gap:14px;
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:600;
  letter-spacing:.14em;
  color:var(--c-stone);
}
.section-label::after{
  content:"";
  flex:1 1 auto;
  height:1px;
  background:var(--line);
}

.tag-index{
  display:inline-flex;
  align-items:baseline;
  gap:6px;
  padding:3px 9px;
  border:1px solid rgba(240,138,60,.5);
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:600;
  letter-spacing:.08em;
  color:var(--c-orange);
  clip-path:polygon(0 0,100% 0,100% 100%,7px 100%);
}

.chip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:3px 9px;
  border:1px solid currentColor;
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:600;
  letter-spacing:.04em;
  line-height:1.4;
}
.chip--red{color:#F06A6A;background:rgba(217,58,58,.16)}
.chip--amber{color:var(--c-amber);background:rgba(232,178,58,.14)}
.chip--moss{color:#A6C4AE;background:rgba(79,107,88,.22)}
.chip--indigo{color:#9FBFE0;background:rgba(35,64,95,.42)}

/* ---------- 7. 面包屑 ---------- */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  padding:20px 0;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  color:var(--c-stone);
}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li + li::before{content:"/";color:var(--c-indigo)}
.breadcrumb a{transition:color var(--t-fast)}
.breadcrumb a:hover{color:var(--c-silver)}
.breadcrumb [aria-current="page"]{color:var(--c-silver)}

/* ---------- 8. 卡片与时间轴 ---------- */
.slant-card{
  position:relative;
  padding:24px;
  background:var(--c-coal);
  border:1px solid var(--line);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 22px),calc(100% - 22px) 100%,0 100%);
  transition:background-color var(--t-mid),border-color var(--t-mid);
}
.slant-card:hover{background:#161A18;border-color:var(--line-strong)}

.timeline{
  position:relative;
  padding-left:32px;
}
.timeline::before{
  content:"";
  position:absolute;
  left:7px;
  top:8px;
  bottom:8px;
  width:1px;
  background:var(--line-strong);
}
.timeline-item{position:relative;padding-bottom:30px}
.timeline-item:last-child{padding-bottom:0}
.timeline-item::before{
  content:"";
  position:absolute;
  left:-29px;
  top:7px;
  width:9px;
  height:9px;
  background:var(--c-ink);
  border:1px solid var(--c-orange);
  border-radius:50%;
}

/* ---------- 9. 图片容器（页面阶段放占位图） ---------- */
.figure{
  position:relative;
  overflow:hidden;
  background:var(--c-coal);
  border:1px solid var(--line);
  isolation:isolate;
}
.figure img{
  width:100%;
  height:100%;
  object-fit:cover;
  filter:saturate(.68) contrast(1.06) brightness(.92);
}
.figure::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:
    linear-gradient(rgba(216,228,225,.09) 1px,transparent 1px),
    linear-gradient(90deg,rgba(216,228,225,.09) 1px,transparent 1px);
  background-size:52px 52px;
  opacity:.55;
  z-index:1;
}
.figure--banner{aspect-ratio:16/7}
.figure--card{aspect-ratio:4/3}
.figure--tall{aspect-ratio:3/4}

.figure-caption{
  margin-top:10px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  color:var(--c-stone);
}

/* ---------- 10. 正文阅读区 ---------- */
.prose{
  max-width:70ch;
  font-size:17px;
  line-height:1.78;
  color:var(--c-silver);
}
.prose > * + *{margin-top:1.05em}
.prose h2{margin-top:1.9em}
.prose h3{margin-top:1.6em}
.prose a{color:var(--c-orange);border-bottom:1px solid rgba(240,138,60,.45)}
.prose a:hover{border-bottom-color:var(--c-orange)}
.prose ul,.prose ol{padding-left:1.3em}
.prose ul li{list-style:none;position:relative;padding-left:1em}
.prose ul li::before{content:"";position:absolute;left:0;top:.72em;width:6px;height:1px;background:var(--c-orange)}

/* ---------- 11. 回访时间条 ---------- */
.revisit-bar{
  position:fixed;
  top:0;
  left:0;
  right:0;
  z-index:120;
  background:var(--c-coal);
  border-bottom:1px solid var(--line-strong);
  color:var(--c-silver);
}

.revisit-main{
  width:100%;
  max-width:var(--frame-max);
  margin:0 auto;
  height:var(--bar-h);
  padding:0 var(--pad-x);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
}

.revisit-status{
  display:flex;
  align-items:center;
  gap:10px;
  min-width:0;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
  line-height:1;
}

.revisit-dot{
  flex:0 0 auto;
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--c-moss);
  box-shadow:0 0 0 3px rgba(79,107,88,.26);
}

.revisit-label{color:var(--c-silver)}
.revisit-sep{color:rgba(216,228,225,.35)}

.revisit-text{
  color:var(--c-stone);
  overflow:hidden;
  text-overflow:ellipsis;
}

.revisit-toggle{
  flex:0 0 auto;
  padding:4px 10px;
  border:1px solid rgba(240,138,60,.42);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  color:var(--c-orange);
  line-height:1.4;
  transition:background-color var(--t-fast),color var(--t-fast),border-color var(--t-fast);
}
.revisit-toggle:hover{background:rgba(240,138,60,.16);border-color:var(--c-orange)}
.revisit-toggle[aria-expanded="true"]{background:var(--c-orange);color:#1A1206;border-color:var(--c-orange)}

.revisit-panel{
  position:absolute;
  top:100%;
  left:0;
  right:0;
  display:none;
  padding:14px var(--pad-x) 16px;
  background:var(--c-indigo);
  border-bottom:1px solid var(--line-strong);
  color:var(--c-cream);
  font-size:13px;
  line-height:1.65;
}
.revisit-panel[data-open="true"]{display:block}
.revisit-panel p{
  max-width:var(--frame-max);
  margin:0 auto;
}

.scroll-progress{
  position:absolute;
  left:0;
  bottom:-1px;
  width:0;
  height:2px;
  background:var(--c-orange);
  transition:width 80ms linear;
}

/* ---------- 12. 框架式页头 ---------- */
.site-header{
  position:sticky;
  top:var(--bar-h);
  z-index:90;
  background:rgba(11,36,29,.95);
  border-bottom:1px solid var(--line-strong);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
}

.header-frame{
  width:100%;
  max-width:var(--frame-max);
  margin:0 auto;
  min-height:74px;
  padding:0 var(--pad-x);
  display:flex;
  align-items:stretch;
  gap:0;
}

.brand-block{
  display:flex;
  align-items:center;
  padding-right:20px;
  margin-right:auto;
}

.brand-link{
  display:flex;
  align-items:center;
  gap:12px;
  padding:12px 0;
}

.brand-mark{
  display:grid;
  place-items:center;
  width:36px;
  height:36px;
  flex:0 0 auto;
  border:1px solid rgba(240,138,60,.55);
  background:rgba(240,138,60,.08);
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:600;
  letter-spacing:.08em;
  color:var(--c-orange);
  clip-path:polygon(0 0,100% 0,100% 100%,9px 100%);
}

.brand-text{display:flex;flex-direction:column;gap:2px;line-height:1.1}

.brand-name{
  font-family:var(--font-head);
  font-size:20px;
  font-weight:900;
  letter-spacing:-.01em;
  color:var(--c-cream);
}

.brand-tagline{
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.1em;
  color:var(--c-stone);
}

.nav-toggle{
  display:none;
  align-items:center;
  gap:9px;
  align-self:center;
  padding:9px 12px;
  border:1px solid var(--line-strong);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  color:var(--c-silver);
  transition:border-color var(--t-fast),color var(--t-fast);
}
.nav-toggle:hover{border-color:var(--c-orange);color:var(--c-orange)}

.nav-toggle-bars{
  position:relative;
  display:block;
  width:16px;
  height:1px;
  background:currentColor;
}
.nav-toggle-bars::before,
.nav-toggle-bars::after{
  content:"";
  position:absolute;
  left:0;
  width:16px;
  height:1px;
  background:currentColor;
  transition:transform var(--t-mid);
}
.nav-toggle-bars::before{top:-5px}
.nav-toggle-bars::after{top:5px}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars{background:transparent}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::before{transform:translateY(5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::after{transform:translateY(-5px) rotate(-45deg)}

.site-nav{
  display:flex;
  align-items:stretch;
  margin-left:auto;
}

.nav-list{
  display:flex;
  align-items:stretch;
}

.nav-item{display:flex;align-items:stretch}

.nav-link{
  display:flex;
  align-items:baseline;
  gap:7px;
  padding:27px 15px;
  border-left:1px solid var(--line);
  transition:background-color var(--t-fast),color var(--t-fast),box-shadow var(--t-fast);
}
.nav-link:hover{background:var(--c-indigo)}
.nav-link:hover .nav-index{color:var(--c-amber)}

.nav-index{
  font-family:var(--font-mono);
  font-size:10px;
  font-weight:600;
  letter-spacing:.06em;
  color:var(--c-stone);
  transition:color var(--t-fast);
}

.nav-label{
  font-size:14px;
  font-weight:500;
  letter-spacing:.01em;
  color:var(--c-silver);
  white-space:nowrap;
}

.nav-link[aria-current="page"]{
  background:var(--c-coal);
  box-shadow:inset 0 -2px 0 var(--c-orange);
}
.nav-link[aria-current="page"] .nav-label{color:#FFFFFF;font-weight:700}
.nav-link[aria-current="page"] .nav-index{color:var(--c-orange)}

.header-meta{
  display:flex;
  align-items:center;
  gap:12px;
  padding-left:18px;
  border-left:1px solid var(--line);
}

.header-meta-label{
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.1em;
  color:var(--c-stone);
  white-space:nowrap;
}

.header-cta{
  display:inline-flex;
  align-items:center;
  padding:9px 16px;
  background:var(--c-orange);
  color:#1A1206;
  font-size:13px;
  font-weight:700;
  letter-spacing:.02em;
  white-space:nowrap;
  clip-path:polygon(0 0,100% 0,100% 100%,10px 100%);
  transition:background-color var(--t-fast);
}
.header-cta:hover{background:#FFA45C}

/* ---------- 13. 页脚 ---------- */
.site-footer{
  margin-top:clamp(48px,8vw,96px);
  background:var(--c-coal);
  border-top:1px solid var(--line-strong);
  color:var(--c-silver);
}

.footer-frame{
  width:100%;
  max-width:var(--frame-max);
  margin:0 auto;
  padding:clamp(40px,5vw,72px) var(--pad-x) 0;
}

.footer-top{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  justify-content:space-between;
  gap:14px;
  padding-bottom:26px;
  border-bottom:1px solid var(--line);
}

.footer-brand{
  font-family:var(--font-head);
  font-size:clamp(2rem,5vw,3.6rem);
  font-weight:900;
  line-height:1;
  letter-spacing:-.03em;
  color:var(--c-cream);
}

.footer-motto{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  color:var(--c-stone);
}

.footer-index{
  display:flex;
  flex-wrap:wrap;
  border-bottom:1px solid var(--line);
}

.footer-col{
  flex:1 1 200px;
  min-width:170px;
  padding:26px 22px 26px 0;
  border-right:1px solid var(--line);
}
.footer-col + .footer-col{padding-left:22px}
.footer-col:last-child{border-right:0;padding-right:0}

.footer-col-title{
  display:flex;
  align-items:baseline;
  gap:8px;
  margin-bottom:14px;
  font-family:var(--font-body);
  font-size:12px;
  font-weight:700;
  letter-spacing:.1em;
  color:var(--c-stone);
}

.footer-col-num{
  font-family:var(--font-mono);
  font-size:10px;
  font-weight:600;
  letter-spacing:.06em;
  color:var(--c-orange);
}

.footer-list{display:grid;gap:9px}

.footer-link{
  display:inline-block;
  font-size:14px;
  color:var(--c-silver);
  transition:color var(--t-fast);
}
.footer-link:hover{color:var(--c-amber)}

.footer-contact{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:26px 0;
  border-bottom:1px solid var(--line);
}

.footer-contact-info{min-width:0}

.footer-contact-line{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.02em;
  color:var(--c-silver);
  word-break:break-word;
}

.footer-address{
  margin-top:7px;
  font-size:12px;
  color:var(--c-stone);
  line-height:1.6;
}

.footer-cta{
  display:inline-flex;
  align-items:center;
  padding:11px 20px;
  background:var(--c-indigo);
  color:var(--c-cream);
  font-size:13px;
  font-weight:700;
  letter-spacing:.02em;
  white-space:nowrap;
  clip-path:polygon(0 0,100% 0,100% 100%,11px 100%);
  transition:background-color var(--t-fast),color var(--t-fast);
}
.footer-cta:hover{background:var(--c-orange);color:#1A1206}

.footer-bar{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:18px 0 22px;
}

.footer-icp,
.footer-copy{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.06em;
  color:var(--c-stone);
}

/* ---------- 14. 进入视口淡入 ---------- */
.js [data-reveal]{
  opacity:0;
  transform:translateY(10px);
  transition:opacity 450ms ease-out,transform 450ms ease-out;
}
.js [data-reveal].is-visible{
  opacity:1;
  transform:none;
}

/* ---------- 15. 响应式 ---------- */
@media (max-width:1180px){
  .header-meta-label{display:none}
  .nav-link{padding:27px 12px}
}

@media (max-width:1024px){
  .header-frame{
    flex-wrap:wrap;
    min-height:64px;
    padding-top:0;
  }
  .brand-block{padding-right:0;margin-right:auto}
  .brand-name{font-size:18px}
  .nav-toggle{display:inline-flex}
  .header-meta{display:none}

  .site-nav{
    display:none;
    width:calc(100% + var(--pad-x) * 2);
    margin:0 calc(var(--pad-x) * -1);
    border-top:1px solid var(--line);
    background:var(--c-ink);
  }
  .site-nav[data-open="true"]{display:block}

  .nav-list{flex-direction:column}

  .nav-item{display:block}

  .nav-link{
    padding:14px var(--pad-x);
    border-left:0;
    border-bottom:1px solid var(--line);
    align-items:center;
  }
  .nav-link[aria-current="page"]{
    box-shadow:inset 3px 0 0 var(--c-orange);
  }
  .nav-label{font-size:15px}

  .grid--stand{grid-template-columns:minmax(0,1fr)}
}

@media (max-width:720px){
  :root{--bar-h:44px;--pad-x:18px}

  .revisit-text,
  .revisit-sep{display:none}

  .revisit-panel{font-size:12px}

  .brand-name{font-size:17px}
  .brand-tagline{font-size:9px}
  .brand-mark{width:32px;height:32px;font-size:11px}

  .footer-frame{padding-top:36px}
  .footer-top{padding-bottom:20px}
  .footer-col{
    flex:1 1 100%;
    min-width:0;
    padding:20px 0;
    border-right:0;
    border-bottom:1px solid var(--line);
  }
  .footer-col + .footer-col{padding-left:0}
  .footer-col:last-child{border-bottom:0;padding-bottom:0}

  .footer-contact{padding:22px 0}
  .footer-cta{width:100%;justify-content:center}

  .footer-bar{flex-direction:column;align-items:flex-start;gap:8px}

  .prose{font-size:16px}
}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}

  *,
  *::before,
  *::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
    scroll-behavior:auto !important;
  }

  .js [data-reveal]{
    opacity:1;
    transform:none;
  }

  .scroll-progress{transition:none}
}